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Illusion - Is Seeing Really Believing?
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Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
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ILLUSION
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00415_Text_res23at.txt
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1996-12-31
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Another way to analyze the
issue is to note that we do not
see our own retinal images. We
see on the basis of the
information contained within
them. The information about
orientation contained within
them is no more distorted by
the fact that it is in its entirety
upside down than is the
information about the relative
size of things distorted by the
fact that the image is a
miniature replica of the scene
it represents. After all, we do
not wonder why things look as
large as they do simply because
their retinal images are so
much smaller than the things
they represent.
Puzzlement over the fact that
upright vision results from an
inverted image may derive from
adherence to the camera theory
of visual perception: The eye
sends a picture into the brain
where an upright inner
"observer" looks at it. If that
picture is upside down, it ought
to appear so to that inner
"observer." However, a sensory
stimulus such as the retinal
image in the eye should be
thought of more as an encoding
of the information in the
world, not as an exact copy of
it. Moreover, as we have seen
repeatedly, the resulting
perception should not be
thought of as an exact copy of
the retinal image. Thus, the
fact that uprightness of vision
is achieved despite an inverted
retinal image is a
pseudoproblem.